valve job question

[Shannen Durphey]

William T Wilson wrote:
> 
> On Sun, 2 May 1999, Stowe, Ted-SEA wrote:
> 
> > In my younger days when doing valve jobs for customers cars, I would clean
> > off the carbon that was on top of the cylinders. I used to rotate the engine
> > around and bring the pistons up to tdc and whirl away with a drill bit
> > mounted wire brush.
> 

> 
> Cleaning the carbon deposits off of the piston isn't really all that
> important because they just come right back when the engine runs the next
> time.
Sounds like a tire shop I went to once.  "No need to clean the mud off
the wheel before we balance it.  It just gets muddy again anyway."
Shannen